Function checkDependencies

packages/cli/lib/version-helper.js:36–162

* Check project dependencies against module versions from the cli template * @param generator - Yeoman generator instance

(generator)

 * @param generator - Yeoman generator instance
 */
async function checkDependencies(generator) {
  const pkg = generator.fs.readJSON(generator.destinationPath('package.json'));

  const isUpdate = generator.command === 'update';
  const pkgDeps = pkg
    ? {
        dependencies: {...pkg.dependencies},
        devDependencies: {...pkg.devDependencies},
        peerDependencies: {...pkg.peerDependencies},
      }
    : {};

  if (!pkg) {
    if (isUpdate) {
      printVersions(generator.log);
      await checkCliVersion(generator.log);
      return;
    }
    const err = new Error(
      'No package.json found in ' +
        generator.destinationRoot() +
        '. ' +
        'The command must be run in a LoopBack project.',
    );
    generator.exit(err);
    return;
  }

  const dependentPackage = '@loopback/core';

  const projectDepsNames = isUpdate
    ? Object.keys(
        // Check dependencies, devDependencies, and peerDependencies
        {
          ...pkgDeps.dependencies,
          ...pkgDeps.devDependencies,
          ...pkgDeps.peerDependencies,
        },
      )
    : Object.keys(pkgDeps.dependencies);

  const isLBProj = isUpdate
    ? projectDepsNames.some(n => n.startsWith('@loopback/'))
    : projectDepsNames.includes(dependentPackage);

  if (!isLBProj) {
    const err = new Error(
      'No `@loopback/core` package found in the "dependencies" section of ' +
        generator.destinationPath('package.json') +
        '. ' +
        'The command must be run in a LoopBack project.',
    );
    generator.exit(err);
    return;
  }

  const incompatibleDeps = {
    dependencies: {},